Polyisocyanurate Board Insulation R Value

As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr.

Polyisocyanurate board insulation r value.

Keep in mind that polyiso s r value increases with thickness. And nrca s r value recommendations associated with the use of polyisocyanurate insulation used in roof systems. Polyiso is used in roof wall ceiling and specialty applications within commercial and residential buildings of all types. R 10 scored squared edge insulation sheathing.

An insulation board made of glass fiber reinforced cellulosic felt facers bonded to a core of isocyanurate foam. As foam ages over time air and blowing agents diffuse in and out of the. R5 radiant acoustic insulation kit stc 19 5. The information on this page is based on data considered to be true and accurate based on periodic internal.

R 5 scored square edge rigid foam board insulation sheathing. All polyiso products follow astm c1289 standard specification for faced rigid polyisocyanurate thermal insulation board. On tuff r insulation one facer is a continuous sheet of aluminum foil. Energyguard polyiso roof insulation.

Tuff r polyisocyanurate insulation consists of high performance high r value closed cell polyisocyanurate foam core boards sandwiched between a choice of durable exterior foil facers. The r value test method and the long term thermal resistance lttr methodol ogy. Astm c1289 standard change. Polyisocyanurate insulation panels are actually one of the most thermally efficient insulation products on the market.

An insulation material s resistance to heat flow is rated in terms of r value a higher r value means greater insulating effectiveness i e higher resistance to heat flow. The other is a tri plex facer consisting of a three ply laminate of durable kraft. The r value of polyisocyanurate is the highest of all traditional roof insulation r 5 7 resulting in a thin but highly efficient roof system. R 6 polyisocyanurate rigid foam insulation board.

2 stated thermal resistance values are based upon conditioning requirements and test methodology found in astm c1289 and astm c518 for foil faced polyisocyanurate insulation. Rmax thermasheath 3 1 in. Polyiso has a high r value per inch compared to other insulation products. 1 when joints penetrations detailed appropriately.

1 2014 industry issue update polyiso s r value provided an overview of the theory of foam aging. Foamular 250 2 in. As much as five times lighter in weight than many other materials with the same r value. Polyisocyanurate polyiso is a closed cell rigid foam board insulation that is bonded to facers on both sides which are composed of various organic and inorganic materials.